Atomizer for liquid-fuel motors.



l J LEFLAIVE ATOMIZBRIOB LIQUID FUEL MOTORS. APPLICATION FILED AUG.14,1911 Patented ma 21, 1912.

Inventor.

Witnesses. "71. 772- 5 2m tures 17.

with a longitudinal passage 9 which is con- .nected with the interior ofthe casing 1 by UNITED STATES-PATENT OFFICE.

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To all whom it ma/y cancer St-z Etienne Department of enement, in; atnew and 'ase rqllewiiig to b t f1ili;1ear-,=mt& eta

ticsrqfqthe invennearsue "as will able others ki tl'ed in ene n'eao tvit appatains te make the admissiottpo fthe jetfof zitomiied fueliAlttits Io'wewpnre this needlei issurrounded by an atomizing sleeveivhich is mo'unted in the ipuer gui'dle bqw and; comprises at its usetwister" he passage of the fuel and upon its inner wall slots servinjfor 'the admission of compressed air.

1 In the accom nmying(drawing Figure '1 is a longitudinal section of adevice embodying the invention. Fig. 2 is an underneath view of theguide casing. Fig. 3 is a sectional view of the atomizing sleeve. Fig. 4illustrates a modification.

The atomizer-in accordance with the invention comprises an outcrcasing 1comprising a socket 2 for the admission of compressed air and a socket 3for the'supply of liquid fuel. The socket 3 communicates an openin 19.

Interna y the casing 1 constitutes a cup 12 presenting an opening 22upon whichthe needle 5 bears: this needle is controlled by an apropriate distributing mechanism and regulhtes the admission of fuel tothe cylinder. A cap 21 is screwed to the casing 1 and at its centercomprises radiating aper- The casing 1 contains an inner casing 4 whichserves to guide the needle 5 and contains itsstufling-box. The lowerpart of this casing is guided and centered upon the inner wall of thecasing 1. It resents a channel l8 through which the liquid suppliedthrough the opening 19- enters. The part 4 comprises perforatlons 10which widen out at their lower part at 11 and comin 191 a finial osraeme 6E mminjecting air. we; lhousing 23 formed in the part 4 con- ;tamsIan atoniizingsleeve (i'su'rrounding with! a lc ertain -number;'orperfotauons 24-.

inunicatethrOughopeningsS with the chair: n'el 18. lhe fuel to beatomized is thus subeted to a pressure cqu'aht'o that of the the 1tnee'd le fi'and applied by a springi'to the j eii'p 12of-theieas1ng11-in sucha manner as to perm t of unequal expansionsof thesev-- eral parts. v I "Qf imits inner wall the sleeve 6 presents anumber" of slots 1-4 for" the 1 passage of the airland at its' uper'partslots 15 intended for the passa'ge' o theliquid'fuel; The slots14! and: i 1 5' do .not necessarily 1 present the form shmvirin thedrawin'g'but may present 1 any suitable form;

- "1heL device acts in the 'following. manner.

Atiuits: lower part the casing 1 containe s certainu quantity" of] fuel1 upon which the pressure of the' injection 1 air enterincig'througliwthe openings 10'an'd 11 is exe'rte When the needle rises, ituncovers the slots 14.- and 15 simultaneously. The fuel at once flowsimmediately through the slots 15 while the air coming from the jet 2 andconducted through the apertures 24 into the chamber 23 passes throughthe slots 14 below the needle 5. Owing to the tangential arrangement ofthe slots 15 an eddying sheet of fuel is formed in the opening 22 andthe air r0-.

jectcd through the slots 14 divides the s eet and atomizes it. The jetof atomized fuel escapes through the openin 17p,

Fig. 4 shows aslightly di erent construe tional form of the atomizingsleeve. This sleeve, instead of presenting longitudinal slots 14internally is formed with a smooth wall but is mounted on the needle5with" sufiicient play to e injection air.

In the atomizer which forms the object of the invention contact beweathe atompermit of the passage of izer fuel-and the walls of theapparatusis avoided by producing the atomizmg m as close proximity as possible tothe lower part of the needle so that the fuel has only a very short pathto traverse before it enters the driving cylinder: this insures bustionand high efiiciency. he ratio between the volumes of fuel and airintroduced is equal to the ratio between the free" erfect comemainsconstant during the entire period :t he lift of the needle:'th1scondition is o highly advantageous from the point of View of tiecombustion. The atomizing of the construction and very easily taken aart:

it also permits of unequal expansion the several parts.

l; claim:

LThe combination in an atomizer provided with an inner and outer casing,an aperture in the outer casing and a needle to cooperate therewi th, ofpassages in said casings adapted to conduct oil to the aperture, asecond set of passages independent of the first adapted. to conductcompressed air to the aperture, and a passage adapted to allow thecompressed air to act on the oil to force it toward the aperture.

2. In an atomizer, an outer casing pro- I rided with an aperture, aninner casing, a

needle to cooperate with said aperture carried by said inner casing,passages in the outer casing, passages in the inner casing notions ofthe slots 14 and. 15. This ratio cooperating with the first namedpassages to conduct the oil to the aperture, a second set of passages'inthe inner casing and a clearance between the cnsi s tocoiiperate withsaid second seeof passages to conduct compressed air tothe saidaperture, pas sages connecting the said clearance With the said oilpassages tcralloW the compressed air to exert a pressure on the 1 toforce it toward the aperture; a

3. In an atomizer, an outer casing provided with an aperture, an. innercasing, a needle carried by said inner casing adapted to close saidaperture, passages in said cas-' ings, an oil chamber between saidcasings adjacent the aperture, passages in said casings adapted toconduct oil to said, chamber, passages substantially atright angles tothe axis of the atomizer toconduct the oil from said. chamber to theaperture, an air chamber in, said inner casing, means to conductcompressed air to said chamber, passages substantially parallel to thelongitudinal axis of the atomizer and adjacent the needle to conduct theair from said air chamber to the aperture, and means to exert a pressureon the oil in said oil chamber.

in testimony whereof I aflix my signature, in presence of two witnesses.

J OS lPH LEFLAIVE. \Vitncsses:

J. LONGET, EDMUND A. BURRILL.

